Weather WorldCottleville, MO 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
Cottleville, MO Weather Forecast
Cottleville, MO Weather Forecast Date: 328 PM CDT Tue Sep 08 2026
The area/counties/county of: Madison County Il, including the cities of: Alton, Edwardsville, Belleville, Cahokia, Saint Charles, and Saint Louis.or toggle through each period.
Tonight... Mostly clear. Not as cool with lows in the mid 70s. South winds 5 to 10 mph.
Wednesday... Sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph, becoming west in the afternoon. Chance of rain 40%. Heat index values up to 103.
Wednesday Night... Showers and thunderstorms. Humid with lows around 70. West winds around 5 mph. Chance of rain 80%.
Thursday... Showers and thunderstorms, mainly in the morning. Cooler with highs in the lower 80s. Northwest winds around 5 mph. Chance of rain 90%.
Thursday Night... Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 60s. North winds around 5 mph in the evening, becoming light and variable.
Friday... Mostly sunny. Highs in the mid 80s.
Friday Night... Mostly clear. Lows in the upper 60s.
Saturday... Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 30%. Heat index values up to 100 in the afternoon.
Saturday Night... Partly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Highs in the upper 80s. Chance of rain 40%.
Sunday... Partly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Highs in the upper 80s. Chance of rain 40%.
Sunday Night... Partly cloudy. A slight chance of showers and thunderstorms. Lows in the upper 60s. Highs around 90. Chance of rain 20%.
Monday... Partly cloudy. A slight chance of showers and thunderstorms. Lows in the upper 60s. Highs around 90. Chance of rain 20%.
Monday Night... Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 40%.
POP = Probability of Precipitation
Cottleville Radar Loop
Use the map search tool if you want to place a location marker on the radar map...